The integrated circuit used in this detector is uncommon today. We found it in a documentation from the 70s. Detection is done by an optical camera with LEDs and a photo sensor.
This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the...
We found this guitar effects circuit in a 1997 documentation. As the components used are still...
This FM transmitter has a high power thanks to a push-pull amplifier stage at the output. The coil...